While your Mercury Grand Marquis’s engine mounts can last the life of the entire vehicle, it is possible that they will go bad. Vibration and a clunking sound are the two most noticeable symptoms when driving the vehicle. There are plenty of visible signs as well. Engine mounts connect the engine to the frame of … Read more
Your Mercury Grand Marquis’s ECM (Engine Control Module) is its brain. Just like a human’s brain, your Grand Marquis can’t function without it. It is sometimes referred to as the ECU or PCM. It’s all the same thing. The ECM controls and directs your entire drivetrain (unless there is a serrate transmission controller). When an … Read more
P0354 is a generic OBD2 code that indicates that ignition coil “D” has an issue with the primary or secondary wiring circuits. If your Mercury Grand Marquis has thrown this code, it may be accompanied by P0304. P0354 is a relatively straightforward diagnosis and is typically caused by a bad coil pack or wiring harness … Read more
P0353 is a generic OBD2 code that indicates that ignition coil “C” has an issue with the primary or secondary wiring circuits. It has the same meaning for the Mercury Grand Marquis as it would any other vehicle. It is typically caused by a bad coil pack or wiring harness issue, although there can be … Read more
P0352 is a generic OBD2 code, which means that it means the same thing for the Mercury Grand Marquis as it would any other vehicle. It indicates that ignition coil “B”has an issue with the primary or secondary wiring circuits associated with it. It is typically caused by a bad coil pack or wiring … Read more
P0351 is a generic OBD II trouble code, which means that it means the same thing for the Mercury Grand Marquis as it would any other vehicle. It indicates that ignition coil “A” is malfunctioning. It is typically caused by a bad coil pack or wiring harness issue, although there can be other causes as … Read more
P0207 is an OBD II trouble code. It indicates there is a fuel injector circuit malfunction, in this case,it would be the seventh cylinder that is malfunctioning. P0207 is a generic code, which means that it has the same meaning for the Mercury Grand Marquis as it would for any other vehicle. When the PCM/ECM … Read more
P0087 is a relatively common OBD II trouble code. This code indicates that there is an issue with getting enough fuel pressure to the fuel rails. It’s generic, which means that it has the same meaning for the Mercury Grand Marquis as it would any other vehicle. This code is most common on vehicles that … Read more
P0445 is a common OBD II trouble code. It’s generic, which means that it has the same meaning for the Mercury Grand Marquis as it would for any other vehicle. It indicates that there is a short circuit in the Evaporative Emissions Control (EVAP) System. P0445 is typically caused by a short circuit (as the … Read more
P0345 is a somewhat common and difficult trouble code to diagnose. The Mercury Grand Marquis is no exception to this rule. It indicates that there is an issue with the camshaft position sensor A on Bank 2. It is usually caused by a wiring problem or the CPS itself. OBDII P0345 means that there … Read more